If you've never been to a Four Seasons, give yourself a treat at the rate you seem to be able to land. I don't know where it is in relation to the Flower Show, but I do know that the Concierge there saved my bacon a few years ago when my formal bow tie was not in the box where it was supposed to be.
The only question when I called was "do you tie your own sir, or would you like a clip-on?"